In a bowl mix all the ingredients together and, help yourself with a fork, until you get a mixture that you will distribute on an aluminum foil, closing it like a candy. Try to give it a shape of a meatloaf.
Finally immerge the tuna-loaf in a pan of boiling water and cook for about 30 minutes on low heat.
Let it cool and then cut it in slices, serving with black olives and tomatoes, seasoned with olive oil, a pinch of salt and a squeeze of lemon juice.

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